Front Disc brakes are a "drag".......

40Coupe · 04-24-2011, 11:11 AM

I'm running a first gen Camaro with Wilwood's up front. They have some drag to them. I thought about installing some kind of heavy return spring between the pads but I'm afraid that will retract the pads and make the pedal too soft.

Any suggestions how to cut down on the drag?

Greg Hill · 04-24-2011, 11:20 AM

There's something wrong if they have much or any drag.

Adger Smith · 04-24-2011, 11:26 AM

40 Cpe
What master cyl. are you using? Some master cylinders have a pressure residual valve. If there is a residual pressure valve in it then remove it. They hold a slight amt. of pressure on the system that allows quicker pedal response and also causes drag. Same thing can happen with a stock proportion valve.

Kenney Kelley · 04-24-2011, 01:02 PM

The master cylinder is a good place to start looking . I also found the hoses going to the calipers and the one going to the rear end might look good on the outside but are plugged on the inside. We also changed the master cylinder and removed the stock proportation valve and replumbed the lines and that fixed our problem. I know this sounds like a lot of work but being able to stop on a short track is priceless. Kenney Kelley

40Coupe · 04-24-2011, 05:48 PM

The MS is a GM unit for disc/drum. Might have to see about changing that out.

Ian Hill · 04-24-2011, 05:54 PM

i just removd the wilwood light weight front brake it out for the solid disc set between my chevelle and the 68 camaro i am working on. when i bled the the fronts the right side was sticking hard and the left side had a slight amount of drag. i just put a strange master cylinder and reinstalled the line lock and a couple of new russel braided lines at the caliper. this brake setup is only 2 seasons old, and i only run about 12-15 days at the track per season. i took the calipers apart tofind "pickup" on the pistons. there was a very small amount of wear showing through the black annodizing of the caliper piston bores, but no pickup. the pichup scores on the pistons polished off with ease. i put a small amount lubrication on the pistons before reinstall and they slide in very easy! put them back on and bled the system, they are working great right now, they back off perfect.

Ian

40Coupe · 05-06-2012, 08:44 PM

Just an update. I changed out the "square" o-rings in the calipers and went to the "round" style and the front wheels make severals turns before stopping now.

Barnstorm · 05-06-2012, 10:40 PM

Quote:

Originally Posted by 40Coupe

Just an update. I changed out the "square" o-rings in the calipers and went to the "round" style and the front wheels make severals turns before stopping now.

Did the same on my Wilwoods 3 years ago...left the 2in compression between the pads in.

MEXJOE · 05-08-2012, 10:14 AM

I have a strange assembly on my car and they seem to drag a bit.
Is this wrong?

MEXJOE · 05-23-2012, 03:30 PM

Where did you get the O-Rings from?

Quote:

Originally Posted by 40Coupe

Just an update. I changed out the "square" o-rings in the calipers and went to the "round" style and the front wheels make severals turns before stopping now.

04-24-2011, 11:11 AM	#1
40Coupe Junior Member Join Date: Mar 2007 Posts: 91 Likes: 0 Liked 0 Times in 0 Posts	Front Disc brakes are a "drag"....... I'm running a first gen Camaro with Wilwood's up front. They have some drag to them. I thought about installing some kind of heavy return spring between the pads but I'm afraid that will retract the pads and make the pedal too soft. Any suggestions how to cut down on the drag? __________________ '67 Camaro 1.25 5.77 @ 118

04-24-2011, 11:20 AM	#2
Greg Hill VIP Member Join Date: May 2006 Location: Louisville , KY Posts: 1,994 Likes: 63 Liked 270 Times in 68 Posts	Re: Front Disc brakes are a "drag"....... There's something wrong if they have much or any drag. __________________ Greg Hill 4171 STK

04-24-2011, 11:26 AM	#3
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,348 Likes: 434 Liked 676 Times in 260 Posts	Re: Front Disc brakes are a "drag"....... 40 Cpe What master cyl. are you using? Some master cylinders have a pressure residual valve. If there is a residual pressure valve in it then remove it. They hold a slight amt. of pressure on the system that allows quicker pedal response and also causes drag. Same thing can happen with a stock proportion valve. __________________ Adger Smith (Former SS) Last edited by Adger Smith; 04-24-2011 at 01:34 PM. Reason: SP

04-24-2011, 01:02 PM	#4
Kenney Kelley Member Join Date: Dec 2006 Location: Cocoa Florida Posts: 200 Likes: 173 Liked 71 Times in 35 Posts	Re: Front Disc brakes are a "drag"....... The master cylinder is a good place to start looking . I also found the hoses going to the calipers and the one going to the rear end might look good on the outside but are plugged on the inside. We also changed the master cylinder and removed the stock proportation valve and replumbed the lines and that fixed our problem. I know this sounds like a lot of work but being able to stop on a short track is priceless. Kenney Kelley Last edited by Kenney Kelley; 04-24-2011 at 01:05 PM.

04-24-2011, 05:48 PM	#5
40Coupe Junior Member Join Date: Mar 2007 Posts: 91 Likes: 0 Liked 0 Times in 0 Posts	Re: Front Disc brakes are a "drag"....... The MS is a GM unit for disc/drum. Might have to see about changing that out. __________________ '67 Camaro 1.25 5.77 @ 118

04-24-2011, 05:54 PM	#6
Ian Hill Member Join Date: Sep 2008 Posts: 216 Likes: 0 Liked 6 Times in 3 Posts	Re: Front Disc brakes are a "drag"....... i just removd the wilwood light weight front brake it out for the solid disc set between my chevelle and the 68 camaro i am working on. when i bled the the fronts the right side was sticking hard and the left side had a slight amount of drag. i just put a strange master cylinder and reinstalled the line lock and a couple of new russel braided lines at the caliper. this brake setup is only 2 seasons old, and i only run about 12-15 days at the track per season. i took the calipers apart tofind "pickup" on the pistons. there was a very small amount of wear showing through the black annodizing of the caliper piston bores, but no pickup. the pichup scores on the pistons polished off with ease. i put a small amount lubrication on the pistons before reinstall and they slide in very easy! put them back on and bled the system, they are working great right now, they back off perfect. Ian

05-06-2012, 08:44 PM	#7
40Coupe Junior Member Join Date: Mar 2007 Posts: 91 Likes: 0 Liked 0 Times in 0 Posts	Re: Front Disc brakes are a "drag"....... Just an update. I changed out the "square" o-rings in the calipers and went to the "round" style and the front wheels make severals turns before stopping now. __________________ '67 Camaro 1.25 5.77 @ 118

05-08-2012, 10:14 AM	#9
MEXJOE Senior Member Join Date: Jun 2008 Location: nhranumbers.com Posts: 869 Likes: 129 Liked 151 Times in 48 Posts	Re: Front Disc brakes are a "drag"....... I have a strange assembly on my car and they seem to drag a bit. Is this wrong?